4.11 Applying the DC Bias Current
4-53 ZM2376
situations, consider the following measures.
Use an external power with low noise.
Connect a bypass capacitor between power supply terminals to absorb the ripple current.
Separate the ripple frequency of the external power and the measured frequency.
Insert a choke coil to the LOW side to restrict noise mixing and decrease of the impedance to
grounding. When the common mode noise is high, it may be improved by reversing the
polarity of the power.
Fix to a measurement range not prone to cause a measurement error.
Increase the measurement signal level of the LCR meter or decrease the output impedance.
Decrease the measurement speed and also use averaging.
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